From owner-freebsd-questions Sat Apr 10 20:36:52 1999 Delivered-To: freebsd-questions@freebsd.org Received: from vortex.greycat.com (vortex.greycat.com [207.173.133.4]) by hub.freebsd.org (Postfix) with SMTP id 1DB1D15302 for ; Sat, 10 Apr 1999 20:36:45 -0700 (PDT) (envelope-from dann@greycat.com) Received: (qmail 19560 invoked from network); 11 Apr 1999 03:34:07 -0000 Received: from bigphred.greycat.com (HELO greycat.com) (207.173.133.2) by vortex.greycat.com with SMTP; 11 Apr 1999 03:34:07 -0000 Message-ID: <37101831.2919FD89@greycat.com> Date: Sat, 10 Apr 1999 20:34:09 -0700 From: Dann Lunsford Organization: You're kidding, right? X-Mailer: Mozilla 4.5 [en] (X11; U; FreeBSD 3.1-STABLE i386) X-Accept-Language: en MIME-Version: 1.0 To: questions@freebsd.org Subject: Re: Pencil mark on 3c509???? References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Spike wrote: > > > What I infer from the man page is that there is an place on the card on > which you may write with a pencil in order to make the card go in to "test > mode". This is probably a part of the card which reacts to the > electromagnetic properties of graphite, the main ingredient of pencil > lead. This sounds plausible, since I know that the machines that read > fill-in-the-bubble multiple choice tests operate in a similar fashion. > Heh, I figured that part out; graphite's a (poor) conductor, drawing a line at the appropriate place would toss a resistive connection in where there hadn't been one before. Question is, where is this "test area"? I'm looking at a 3c509 as I type, and there's only one place I can see that could be a candidate: Just below the boot EPROM socket, there's a little box with two solder pads, one (as far as I can tell) attached to the ground plane, the other to a small resistor (R8, to be precise). It's not mentioned in any 3C509 docs I've ever seen. Guess I'll just have to try it and see. First time I've ever heard of a board designed for connect-the-dots, though :-). Dann "What next, electronic fingerpainting?" Lunsford To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message